Development of a Patient-reported Outcome Instrument for Patients With Lumbar Degenerative Disease After Lumbar Fusion (DPROIPLDDALF)

  • End date
    May 1, 2023
  • participants needed
  • sponsor
    Peking University Third Hospital
Updated on 24 March 2022


The commonly used scales (ODI+JOA-29+VAS) lack the assessment of lumbar stiffness, and there is no scale for evaluating lumbar stiffness in China.Based on the Delphi method and the analytic hierarchy process, this study will improve and optimize the quality of life evaluation system for patients with severe degenerative lumbar disease, so as to obtain a concise, practical, and effective patient-reported outcome instrument.


Although lumbar fusion can improve function by correcting deformity,restoring spinal stability,and reducing pain, it also by intention leads to spinal stiffness which can impair function of daily activities.The commonly used scales (ODI+JOA-29+VAS) lack the assessment of lumbar stiffness.Lumbar Stiffness Disability Index (LSDI) has not been used widely, and there is no scale for evaluating lumbar stiffness in China.In addition, even if LSDI is modified, there is still an evaluation dilemma: after lumbar long-segment fixation, the pain and neurological function-related scale scores show that the quality of life is improved, while the lumbar stiffness-related scale scores show that the quality of life is reduced . So overall, is the patient's quality of life improved or decreased? Simply combining these two types of scales cannot explain clearly.

This study can be roughly divided into the following 5 main steps:

Step 1:Collect and sort out the dimensions and exhaustive items that affect the patients' quality of life by systematically reviewing the related literature and a qualitative interview study.

Step 2: Through a cross-sectional survey and experts' meetings, the items is initially optimized, and 35-45 items will be retained.

Step 3: Screen 20-25 excellent items by 2-3 rounds of Delphi method, then use the analytic hierarchy process to determine the weight of each item, so as to establish a initial PRO instrument.

Step 4: Verify the reliability and validity of the initial PRO instrument, and further optimize the initial PRO instrument in order to be used in clinical practice and research.

Step 5: Verify the responsiveness of the initial PRO instrument, calculate the ES, SRM, AUC and MICD values of the initial PRO instrument.

Finally, a novel, concise, practical, and effective PRO instrument for use in degenerative lumbar disease patients will be established.

Condition Lumbar Spine Degeneration
Clinical Study IdentifierNCT04781517
SponsorPeking University Third Hospital
Last Modified on24 March 2022


Yes No Not Sure

Inclusion Criteria

Clinical diagnosis of Lumbar Spine Degeneration
Plan for or have undergone lumbar fusion
Be willing to participate in this research

Exclusion Criteria

Combined with neurological disease such as Motor neuron disease, Progressive muscular dystrophy, Peripheral neuropathy, Spinal cord disease, et al
Combined with severe cervical/thoracic spine disease or other diseases that seriously affect the quality of life
Suffer lumbar spine trauma after lumbar fusion
Preoperative cases exclude patients who plan for revision surgery
Be unwilling to participate in this research
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